A twisted jet from R Mon

Details A twisted jet from R Mon A twisted jet from R Mon

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002a%26a...390l...5m&link_type=abstract

Astronomy and Astrophysics, v.390, p.L5-L9 (2002)

Astronomy and Astrophysics

Astrophysics

5

Ism: Individual Objects: R Mon, Jets And Outflows, Kinematics And Dynamics

Scientific paper

We present the results of long-slit and integral-field spectroscopy of the R Mon Herbig-Haro jet. The data were obtained with the 6 m telescope. A slightly curved jet of 16\arcsec in length is evident in [S Ii] lines. Maps of radial velocities and electron densities are shown. The difference between radial velocities on the sides of the jet as well as the density distribution can be considered as an indication of presence of the helical shock structure in the jet. This structure, having a DNA-like appearance, abruptly changes direction near the edges, which could account for the observed velocity variations. Radial velocities were determined also for the several knots in the HH 39 group. The kinematics of the system as a whole also suggests the precession of the outflow. Based on observations collected with the 6 m telescope of the Special Astrophysical Observatory (SAO) of the Russian Academy of Sciences (RAS) which is operated under the financial support of Science Department of Russia (registration number 01-43).

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